Hello, I have read this interesting blog post https://www.ovirt.org/blog/2016/12/extension-iptables-rules-oVirt-hosts/
In my case, to allow incoming connections from Nagios server to connect to Nagios nrpe daemon installed on hosts I have run [root@ovmgr1 ~]# engine-config --set IPTablesConfigSiteCustom=' > -A INPUT -p tcp --dport 5666 -s 10.4.5.99/32 -m comment --comment "Nagios NRPE daemon" -j ACCEPT > ' [root@ovmgr1 ~]# and systemctl restart ovirt-engine BTW: the link above misses the final ' apex at the end of the similar command in the given example On my oVirt running host (CentOS 7.4) in the mean time I have run [g.cecchi@ov300 ~]$ sudo iptables -I INPUT 16 -p tcp --dport 5666 -s 10.4.5.99/32 -m comment --comment "Nagios NRPE daemon" -j ACCEPT In fact the current "reject-with icmp-host-prohibited" was line 16 and I have inserted it right before. So far so good. I have a doubt if, in case of host put into maintenance and then reactivated, or rebooted, the rule will remain. Or do I have anyway to put any line in any file on host to set it persistently? I wouldn't like to go and reinstall it only to statically set a new iptables rule. Thanks, Gianluca
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